43987898 has 4 divisors (see below), whose sum is σ = 65981850. Its totient is φ = 21993948.

The previous prime is 43987897. The next prime is 43987903. The reversal of 43987898 is 89878934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42211009 + 1776889 = 6497^2 + 1333^2 .

It is not an unprimeable number, because it can be changed into a prime (43987897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10996973 + ... + 10996976.

Almost surely, 2^43987898 is an apocalyptic number.

43987898 is a deficient number, since it is larger than the sum of its proper divisors (21993952).

43987898 is a wasteful number, since it uses less digits than its factorization.

43987898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21993951.

The product of its digits is 3483648, while the sum is 56.

The square root of 43987898 is about 6632.3372954035. The cubic root of 43987898 is about 353.0024636893.

The spelling of 43987898 in words is "forty-three million, nine hundred eighty-seven thousand, eight hundred ninety-eight".